Data as of Nov 4, 2026.

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Buffer ETFs

AIOO vs XBOC: Cap, Buffer & Days Left

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As of Nov 4, 2026 XBOC can fall 0.9% before its buffer engages and AIOO 0.3%, and AIOO resets 273 days sooner.

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Net assets: $67m on Nov 3, 2026 for AllianzIM U.S. Equity Buffer100 Protection ETF - Jan, and $60m on Nov 4, 2026 for Innovator U.S. Equity Accelerated 9 Buffer ETF - Oct.

At a glance
0.3%
AIOO can fall this far before its buffer
0.9%
XBOC can fall this far before its buffer
uncapped
AIOO can still gain
12.7%
XBOC can still gain
AIOO No cap
No capAIOO: reference +0.5% since period start, fund +0.3%; buffer Floor; no cap; No cap. Data to Nov 4, 2026.full floor beneathfull floor0% period startno cap, 29.83% participation+0.5% gained, no capTODAY · SPY +0.5%No capAIOO: reference +0.5% since period start, fund +0.3%; buffer Floor; no cap; No cap. Data to Nov 4, 2026.full floor beneathfull floor0% startno cap+0.5% gained, no capTODAY · SPY +0.5%

AIOO: reference +0.5% since period start, fund +0.3%; buffer Floor; no cap; No cap. Data to Nov 4, 2026.

Data to Nov 4, 2026.
XBOC Between buffer and cap
Between buffer and capXBOC: reference +0.5% since period start, fund +0.8%; buffer 0 to −9; cap +13.7%; Between buffer and cap. Data to Nov 4, 2026.9 pts+13.2% more to the cap−9.0% floor0% period start+13.7% cap+0.5% gain capturedTODAY · SPY +0.5%Between buffer and capXBOC: reference +0.5% since period start, fund +0.8%; buffer 0 to −9; cap +13.7%; Between buffer and cap. Data to Nov 4, 2026.−9.0% floor0% start+13.7% cap9 pts of buffer+0.5% gain captured+13.2% more to the capTODAY · SPY +0.5%

XBOC: reference +0.5% since period start, fund +0.8%; buffer 0 to −9; cap +13.7%; Between buffer and cap. Data to Nov 4, 2026.

XBOC: reference +0.5% since period start, fund +0.8%; buffer 0 to −9; cap +13.7%; Between buffer and cap. Data to Nov 4, 2026.

Pair scorecard

AIOO costs 0.15 points a year less; their one-year returns differ by 8.1 points; AIOO is 1.1 times larger.

Points (pts) are percentage points.

AIOO vs XBOC: Cap, Buffer & Days Left
MeasureAIOOXBOC
Return
Total return, 1 year+3.3%+11.4%
Drawdown
Index fall to the buffer0.5%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.64%0.79%
Net assets, as of Nov 3, 2026$67m$59m
Holdings
Holdings in commonnot published

Method

Risk and return

Jul 11, 2025 to Oct 30, 2026 · 68 weekly returns · each against SPY
AIOO XBOC
Return
Total return edge XBOC +5.5% +13.8%
Annualized edge XBOC +4.2% +10.4%
Price return edge XBOC +5.5% +13.8%
Risk
Volatility edge AIOO 1.8% 5.4%
Max drawdown edge AIOO −0.6% −4.5%
Downside capture 14.7% 39.8%
Beta 0.13 0.42
Risk-adjusted
Sharpe edge XBOC 0.16 1.13
Sortino edge XBOC 0.23 1.98
Treynor 0.021 0.146
Calmar edge AIOO 7.46 2.31
Against the benchmark
Alpha −1.4% a year +0.9% a year
Alpha t-stat −1.89 0.41
Information ratio −1.22 −0.90
Tracking error 10.1% 7.1%
Reading

From Jul 2025 to Oct 2026, XBOC returned more: +13.8% to +5.5%. AIOO swung less: 1.8% to 5.4%. AIOO fell less at its worst: −0.6% to −4.5%.

Full scorecard

19 measures, with how each is measured
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Risk and return: AIOO vs XBOC: Cap, Buffer & Days Left
MeasureAIOOXBOCSPYEdgeHow it is measured
Return
Total return+5.5%+13.8%XBOCPrice change plus distributions, reinvested.
Annualized+4.2%+10.4%XBOCTotal return as a yearly rate.
Price return+5.5%+13.8%XBOCPrice change alone, distributions left out.
Risk
Volatility1.8%5.4%AIOOSpread of weekly returns, annualized. Lower is steadier.
Downside deviation1.2%3.1%AIOOLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−0.6%−4.5%AIOODeepest fall from a high to the low after it.
Upside capture12.5%35.9%100.0%XBOCShare of its benchmark's rise caught in the weeks it rose.
Downside capture14.7%39.8%100.0%AIOOShare of its benchmark's fall taken in the weeks it fell. Lower is better.
Beta0.130.421.00AIOO lowerHow far it moves for each 1% its benchmark moves.
R squared0.780.811.00Not an edgeShare of its weekly moves its benchmark explains.
Risk-adjusted
Sharpe0.161.13XBOCReturn above Treasury bills per unit of volatility.
Sortino0.231.98XBOCReturn above Treasury bills per unit of downside deviation.
Treynor0.0210.1460.125XBOCReturn above Treasury bills per unit of beta.
Calmar7.462.31AIOOAnnualized return divided by the max drawdown.
Against the benchmark
BenchmarkSPYSPYSPYThe ETF each fund is measured against.
Alpha−1.4% a year+0.9% a year0.0%Not significantYearly return beyond what its beta to the benchmark predicts.
Alpha t-stat−1.890.41Not an edgeHow sure the alpha is. Below 2, it could be chance.
Alpha range−2.9% to +0.1%−3.4% to +5.1%Both include zeroThe 95% range for the yearly alpha.
Information ratio−1.22−0.90XBOCReturn against its benchmark per unit of tracking error.
Tracking error10.1%7.1%0.0%Not an edgeHow far weekly returns stray from the benchmark, annualized.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 68 weekly returns. Cash rate: the 13-week Treasury bill.

Window by window

Window by window: AIOO vs XBOC: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowAIOOXBOCAIOOXBOC
3 months+0.1%+1.8%+0.5 pts+2.2 pts
6 months+1.4%+4.9%−3.1 pts+0.4 pts
1 year+3.3%+11.4%−10.2 pts−2.1 pts
3 years–+37.8%–−38.6 pts
Since launchNot the same days: AIOO Jul 2025 · XBOC Oct 2021+5.9%+51.6%−18.3 pts−25.0 pts

Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. – means no data for this window. Open this comparison in the app →

Side by side

AIOO AllianzIM U.S. Equity Buffer100 Protection ETF - Jan · Absorbs the whole loss on SPY and does not cap the gain, over a period ending Dec 31, 2026 XBOC Innovator U.S. Equity Accelerated 9 Buffer ETF - Oct · Absorbs the first 9% of loss on SPY and caps the gain at 13.7%, over a period ending Sep 30, 2027
Reference index SPY SPY
Buffer 100% 9%
Outcome period Oct 1, 2026 to Dec 31, 2026 Sep 30, 2026 to Sep 30, 2027
Days left 57 330
Starting cap uncapped +13.7%
Can still gain uncapped 12.7%
Fall before buffer 0.3% 0.9%
Protection left, index points 100.0% of 100.0% 9.0% of 9.0%
Index return this period +0.5% +0.5%
Fund return this period +0.3% +0.8%
State today Uncapped Open
Expense ratio 0.64% 0.79%
Net assets, AIOO as of Nov 3, 2026 and XBOC as of Nov 4, 2026 $67m $60m

As of Nov 4, 2026. Source: ETFIQ.

These are two different products. AIOO is a floor fund, which caps how far a holder can fall. XBOC is a buffer fund, which absorbs the first part of a fall and leaves everything below it with the holder.

AIOO has no cap. It takes 30% of whatever the index does, where XBOC takes all of the rise up to 13.7% and nothing above it.

They do not reset together. AIOO has 57 days of its period left and XBOC has 330, so the two are not the same bet on the same months.

Where each one stands today

AIOO resets first, on Dec 31, 2026, 57 days from now; XBOC runs to Sep 30, 2027, 330 days. A fall from here reaches AIOO’s buffer after 0.3% and XBOC’s after 0.9%. Both track SPY, so what separates them is where each is in its own period.

Client brief:

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About each fund
AIOO

This fund has no cap. It takes a share of any further rise in SPY. The fund's price can fall 0.3% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 0.5% from today's level to the point where the buffer begins. Protection left, in index points: 100.0% of the 100.0% buffer still sits below today's SPY level. 57 days remained on Nov 4, 2026. On Dec 31, 2026 the period ends and new terms are set.

XBOC

From its price on Nov 4, 2026, the fund can gain about 12.7% more before it reaches its cap. The fund's price can fall 0.9% from here before the buffer starts absorbing losses, by the issuer's number. Protection left, in index points: 9.0% of the 9.0% buffer still sits below today's SPY level. 330 days remained on Nov 4, 2026. On Sep 30, 2027 the period ends and a new cap is set.

Questions people ask

Which resets first, AIOO or XBOC?
AIOO ends its outcome period on Dec 31, 2026 and XBOC on Sep 30, 2027. New terms are set the day after each.
Which is cheaper, AIOO or XBOC?
AIOO charges 0.64% a year and XBOC charges 0.79%, so AIOO is cheaper. Fees come from each fund's prospectus.
Other comparisons
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Sources and dates

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

ETFIQ calculates every number from each issuer’s published outcome-period terms. Buffer ETFs hold options on an index, not shares, so there is no holdings overlap to report.

Every number is an ETFIQ calculation with distributions reinvested.

Cite this pageCitation, APA and Markdown

ETFIQ, AIOO against XBOC, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/aioo-vs-xboc

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.